CVE-2025-40340 (GCVE-0-2025-40340)
Vulnerability from cvelistv5 – Published: 2025-12-09 04:09 – Updated: 2026-05-11 21:47
VLAI
EPSS
VEX
Title
drm/xe: Fix oops in xe_gem_fault when running core_hotunplug test.
Summary
In the Linux kernel, the following vulnerability has been resolved:
drm/xe: Fix oops in xe_gem_fault when running core_hotunplug test.
I saw an oops in xe_gem_fault when running the xe-fast-feedback
testlist against the realtime kernel without debug options enabled.
The panic happens after core_hotunplug unbind-rebind finishes.
Presumably what happens is that a process mmaps, unlocks because
of the FAULT_FLAG_RETRY_NOWAIT logic, has no process memory left,
causing ttm_bo_vm_dummy_page() to return VM_FAULT_NOPAGE, since
there was nothing left to populate, and then oopses in
"mem_type_is_vram(tbo->resource->mem_type)" because tbo->resource
is NULL.
It's convoluted, but fits the data and explains the oops after
the test exits.
Severity
No CVSS data available.
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Linux | Linux |
Affected:
dd08ebf6c3525a7ea2186e636df064ea47281987 , < 99428bd6123d5676209dfb1d7a8f176cc830b665
(git)
Affected: dd08ebf6c3525a7ea2186e636df064ea47281987 , < 29a3064f9c5a908aaf0b39cd6ed30374db11840d (git) Affected: dd08ebf6c3525a7ea2186e636df064ea47281987 , < 1cda3c755bb7770be07d75949bb0f45fb88651f6 (git) |
guessed | |
| Linux | Linux |
Affected:
6.8
Unaffected: 0 , < 6.8 (semver) Unaffected: 6.12.58 , ≤ 6.12.* (semver) Unaffected: 6.17.8 , ≤ 6.17.* (semver) Unaffected: 6.18 , ≤ * (original_commit_for_fix) |
guessed |
{
"containers": {
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"drivers/gpu/drm/xe/xe_bo.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "99428bd6123d5676209dfb1d7a8f176cc830b665",
"status": "affected",
"version": "dd08ebf6c3525a7ea2186e636df064ea47281987",
"versionType": "git"
},
{
"lessThan": "29a3064f9c5a908aaf0b39cd6ed30374db11840d",
"status": "affected",
"version": "dd08ebf6c3525a7ea2186e636df064ea47281987",
"versionType": "git"
},
{
"lessThan": "1cda3c755bb7770be07d75949bb0f45fb88651f6",
"status": "affected",
"version": "dd08ebf6c3525a7ea2186e636df064ea47281987",
"versionType": "git"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"drivers/gpu/drm/xe/xe_bo.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "6.8"
},
{
"lessThan": "6.8",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"version": "6.12.58",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.17.*",
"status": "unaffected",
"version": "6.17.8",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "6.18",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.12.58",
"versionStartIncluding": "6.8",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.17.8",
"versionStartIncluding": "6.8",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.18",
"versionStartIncluding": "6.8",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/xe: Fix oops in xe_gem_fault when running core_hotunplug test.\n\nI saw an oops in xe_gem_fault when running the xe-fast-feedback\ntestlist against the realtime kernel without debug options enabled.\n\nThe panic happens after core_hotunplug unbind-rebind finishes.\nPresumably what happens is that a process mmaps, unlocks because\nof the FAULT_FLAG_RETRY_NOWAIT logic, has no process memory left,\ncausing ttm_bo_vm_dummy_page() to return VM_FAULT_NOPAGE, since\nthere was nothing left to populate, and then oopses in\n\"mem_type_is_vram(tbo-\u003eresource-\u003emem_type)\" because tbo-\u003eresource\nis NULL.\n\nIt\u0027s convoluted, but fits the data and explains the oops after\nthe test exits."
}
],
"providerMetadata": {
"dateUpdated": "2026-05-11T21:47:28.456Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/99428bd6123d5676209dfb1d7a8f176cc830b665"
},
{
"url": "https://git.kernel.org/stable/c/29a3064f9c5a908aaf0b39cd6ed30374db11840d"
},
{
"url": "https://git.kernel.org/stable/c/1cda3c755bb7770be07d75949bb0f45fb88651f6"
}
],
"title": "drm/xe: Fix oops in xe_gem_fault when running core_hotunplug test.",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2025-40340",
"datePublished": "2025-12-09T04:09:57.059Z",
"dateReserved": "2025-04-16T07:20:57.187Z",
"dateUpdated": "2026-05-11T21:47:28.456Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"epss": {
"cve": "CVE-2025-40340",
"date": "2026-09-20",
"epss": "0.00219",
"percentile": "0.12657"
},
"microsoft_vex": {
"current_release_date": "2025-12-10T01:02:33.000Z",
"cve": "CVE-2025-40340",
"id": "msrc_CVE-2025-40340",
"initial_release_date": "2025-12-02T00:00:00.000Z",
"product_status:known_affected": "1",
"source": "Microsoft CSAF VEX",
"status": "final",
"title": "drm/xe: Fix oops in xe_gem_fault when running core_hotunplug test.",
"url": "https://msrc.microsoft.com/csaf/vex/2025/msrc_cve-2025-40340.json",
"version": "1"
},
"nvd": {
"cve": {
"affected": [
{
"affectedData": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"drivers/gpu/drm/xe/xe_bo.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "99428bd6123d5676209dfb1d7a8f176cc830b665",
"status": "affected",
"version": "dd08ebf6c3525a7ea2186e636df064ea47281987",
"versionType": "git"
},
{
"lessThan": "29a3064f9c5a908aaf0b39cd6ed30374db11840d",
"status": "affected",
"version": "dd08ebf6c3525a7ea2186e636df064ea47281987",
"versionType": "git"
},
{
"lessThan": "1cda3c755bb7770be07d75949bb0f45fb88651f6",
"status": "affected",
"version": "dd08ebf6c3525a7ea2186e636df064ea47281987",
"versionType": "git"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"drivers/gpu/drm/xe/xe_bo.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "6.8"
},
{
"lessThan": "6.8",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"version": "6.12.58",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.17.*",
"status": "unaffected",
"version": "6.17.8",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "6.18",
"versionType": "original_commit_for_fix"
}
]
}
],
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/xe: Fix oops in xe_gem_fault when running core_hotunplug test.\n\nI saw an oops in xe_gem_fault when running the xe-fast-feedback\ntestlist against the realtime kernel without debug options enabled.\n\nThe panic happens after core_hotunplug unbind-rebind finishes.\nPresumably what happens is that a process mmaps, unlocks because\nof the FAULT_FLAG_RETRY_NOWAIT logic, has no process memory left,\ncausing ttm_bo_vm_dummy_page() to return VM_FAULT_NOPAGE, since\nthere was nothing left to populate, and then oopses in\n\"mem_type_is_vram(tbo-\u003eresource-\u003emem_type)\" because tbo-\u003eresource\nis NULL.\n\nIt\u0027s convoluted, but fits the data and explains the oops after\nthe test exits."
}
],
"id": "CVE-2025-40340",
"lastModified": "2026-06-17T09:21:41.070",
"metrics": {},
"published": "2025-12-09T16:17:44.267",
"references": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/1cda3c755bb7770be07d75949bb0f45fb88651f6"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/29a3064f9c5a908aaf0b39cd6ed30374db11840d"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/99428bd6123d5676209dfb1d7a8f176cc830b665"
}
],
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"vulnStatus": "Deferred"
}
},
"redhat_vex": {
"aggregate_severity": "Moderate",
"current_release_date": "2026-06-30T02:57:21+00:00",
"cve": "CVE-2025-40340",
"id": "CVE-2025-40340",
"initial_release_date": "2025-12-09T00:00:00+00:00",
"product_status:known_affected": "184",
"product_status:known_not_affected": "90",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "kernel: drm/xe: Fix oops in xe_gem_fault when running core_hotunplug test",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-40340.json",
"version": "3"
}
}
}
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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
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- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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